John Aldrich wrote in a message to Walter Co:
 WC>  Well, I thought the ITU chose the K56Flex instead of X2 and they
 WC>  set the standard as V.90. My queistion is if V.90 is not compatible
 WC>  to K56 and X2, then what is compatible to V.90?
 JA> V.90 has elements of BOTH proprietary standards in there. However,
 JA> it's my understanding that K56Flex got the lion's share of their
 JA> protocol into the final standard...
Only if you read the Rockwell press releases by themselves.  If you followed 
the earlier discussions such as the comments from Intel's engineers about the 
marked similarities between the two protocols and comments from other 
industry sources, it would appear that Rockwell was claiming a design win for 
items that were essentially identical between x2 and K56Flex.  On the 
relatively few items that were significantly different, V.90 seems to be 
about equally split between new (and, hopefully, improved best of both) 
implementations, adopting the K56Flex implementation and adopting the x2 
implementation.
Rockwell isn't alone either.  Some of the 3Com press releases were about as 
bad in claiming credit for common items.
Regards,
       David
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